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Tube Database (7,341 tube types · 1,270 archive entries)

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3EJ7 vacuum tube outline illustration

Tube-number record

3EJ7

0 archive entries

3EJ7 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Sylvania, construction Pentode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassPentode
BaseNoval (B9A)
Filament3.4 V @ 600 mA

Construction

Primary TypePentode
EnvelopeT-6 1/2
SectionsSingle

Filament / Heater

Heater NotesSeries operation

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier200 V150003500006010 mA

Application Notes

Designed for service as IF amplifiers in series string operation.

Datasheets

Datasheet: 3EJ7.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    Plate Dissipation2.5 W
    Grid 2 Voltage250 V
    Cathode Current25 mA

    Audio Performance

    Key Features
    • High transconductance
    • Sharp-cutoff